Graminaceae vs family Gramineae

Graminaceae and family Gramineae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Graminaceae	Yes	No	No	No
family Gramineae	Yes	No	No	No

As nouns, Graminaceae and family Gramineae are synonyms defined as:

Graminaceae and family Gramineae: the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane

Other synonyms of Graminaceae include family Graminaceae, family Poaceae, Gramineae, grass family, Poaceae.

Graminaceae (noun)	family Gramineae (noun)
the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane	the grasses: chiefly herbaceous but some woody plants including cereals, bamboo, reeds, sugar cane